package com.yb.ybmsgservice.crash;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Build;
import android.util.Log;
import android.view.ViewGroup;
import android.view.Window;

import com.blankj.utilcode.util.PathUtils;
import com.blankj.utilcode.util.SPUtils;
import com.blankj.utilcode.util.ToastUtils;

import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by Forrest.
 * User: Administrator
 * Date: 2021/9/30
 * Description:
 */
public class CrashHandlers implements UncaughtExceptionHandler {

    public static final String TAG = "CrashHandler";

    // 系统默认的UncaughtException处理类
    private UncaughtExceptionHandler mDefaultHandler;
    // CrashHandler实例
    private static final CrashHandlers INSTANCE = new CrashHandlers();
    // 程序的Context对象
    private Context mContext;
    // 用来存储设备信息和异常信息
    private final Map<String, String> infos = new HashMap<String, String>();

    private long lastExTime = 0L;

    /**
     * 保证只有一个CrashHandler实例
     */
    private CrashHandlers() {
    }

    /**
     * 获取CrashHandler实例 ,单例模式
     */
    public static CrashHandlers getInstance() {
        return INSTANCE;
    }

    private CrashCallback mCrashCallback = null;

    public void init(Context context, CrashCallback iCrashCallback) {
        Log.e("CrashHandler", "...........................2");
        mCrashCallback = iCrashCallback;
        mContext = context;
        // 获取系统默认的UncaughtException处理器
        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
        // 设置该CrashHandler为程序的默认处理器
        Thread.setDefaultUncaughtExceptionHandler(this);
    }


    /**
     * 当UncaughtException发生时会转入该函数来处理
     */
    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        lastExTime = SPUtils.getInstance("CC").getLong("last_crash", 0);
        if (!handleException(ex) && mDefaultHandler != null) {
            // 如果用户没有处理则让系统默认的异常处理器来处理
            mDefaultHandler.uncaughtException(thread, ex);

            if (mCrashCallback != null) {
                if (System.currentTimeMillis() - lastExTime > 10000) {
                    Log.e(TAG, "handleException: " + lastExTime);
                    SPUtils.getInstance("CC").put("last_crash", System.currentTimeMillis());
                    try {
                        Thread.sleep(3000);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                    mCrashCallback.onCrash(ex);
                } else {
                    Log.e(TAG, "handleException高频: " + lastExTime);
                }
            }
        } else {
//            try {
//                Thread.sleep(3000);
//            } catch (InterruptedException e) {
//                Log.e(TAG, "error : ", e);
//            }
            if (mCrashCallback != null) {
                if (System.currentTimeMillis() - lastExTime > 10000) {
                    Log.e(TAG, "handleException: " + lastExTime);
                    SPUtils.getInstance("CC").put("last_crash", System.currentTimeMillis());
                    try {
                        Thread.sleep(3000);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                    mCrashCallback.onCrash(ex);
                } else {
                    Log.e(TAG, "handleException高频: " + lastExTime);
                }
            }
            // 退出程序
            android.os.Process.killProcess(android.os.Process.myPid());
            System.exit(1);


        }
    }

    /**
     * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
     *
     * @param ex
     * @return true:如果处理了该异常信息;否则返回false.
     */
    private boolean handleException(Throwable ex) {
        if (ex == null) {
            return false;
        }
        // 收集设备参数信息
        collectDeviceInfo(mContext);
        // 保存日志文件
        saveCrashInfo2File(ex);

        return false;
    }

    /**
     * 收集设备参数信息
     *
     * @param ctx
     */
    public void collectDeviceInfo(Context ctx) {
        try {
            PackageManager pm = ctx.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
            if (pi != null) {
                String versionName = pi.versionName == null ? "null" : pi.versionName;
                String versionCode = pi.versionCode + "";
                infos.put("versionName", versionName);
                infos.put("versionCode", versionCode);
            }
        } catch (NameNotFoundException e) {
            Log.e(TAG, "an error occured when collect package info", e);
        }
        Field[] fields = Build.class.getDeclaredFields();
        for (Field field : fields) {
            try {
                field.setAccessible(true);
                infos.put(field.getName(), field.get(null).toString());
                Log.d(TAG, field.getName() + " : " + field.get(null));
            } catch (Exception e) {
                Log.e(TAG, "an error occured when collect crash info", e);
            }
        }
    }

    /**
     * 保存错误信息到文件中
     *
     * @param ex
     * @return 返回文件名称, 便于将文件传送到服务器
     */
    private String saveCrashInfo2File(Throwable ex) {
        StringBuffer sb = new StringBuffer();
        Calendar calendar = Calendar.getInstance();
        int year = calendar.get(Calendar.YEAR);
        int month = calendar.get(Calendar.MONTH) + 1;
        int day = calendar.get(Calendar.DAY_OF_MONTH);
        int hour = calendar.get(Calendar.HOUR_OF_DAY);
        int minute = calendar.get(Calendar.MINUTE);
        int second = calendar.get(Calendar.SECOND);
        String time = year + "-" + month + "-" + day + " " + hour + ":" + minute + ":" + second;

        sb.append("************************************************" + time
                + "****************************************" + "\r\n");


        Writer writer = new StringWriter();
        PrintWriter printWriter = new PrintWriter(writer);
        ex.printStackTrace(printWriter);
        Throwable cause = ex.getCause();
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }
        printWriter.close();
        String result = writer.toString();
        sb.append(result);

        sb.append("###---");

        for (Map.Entry<String, String> entry : infos.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            sb.append(key + "=" + value + "\n");
        }
        try {
            String fileName = "errorLog" + System.currentTimeMillis() + ".txt";
            // if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            String path = PathUtils.getExternalAppCachePath() + File.separator + "errorLog";
            // String path = Environment.getExternalStorageDirectory() + "/errorLog";
            File dir = new File(path);
            Log.e(TAG, "saveCrashInfo2File: " + dir.getAbsolutePath());
            if (!dir.exists()) {
                dir.mkdirs();
            }
            File file = new File(path + File.separator + fileName);
            if (!file.exists()) {
                file.createNewFile();
            }
            FileWriter fileWriter = new FileWriter(file, true);
            fileWriter.write(sb.toString());
            fileWriter.close();
            // }
            return fileName;
        } catch (Exception e) {
//            ToastUtils.showLong("aaaaa:"+e.toString());
            return null;
        }
    }

    public void showLastException(Activity activity) {
        String path = PathUtils.getExternalAppCachePath() + File.separator + "errorLog";
        File lastFile = getLastModified(path);
        if (lastFile == null) {
            ToastUtils.showLong("无异常日志");
            return;
        }
        String str = com.blankj.utilcode.util.FileIOUtils.readFile2String(lastFile);
//        String[] ss = str.split("###---");
        AlertDialog ad = new AlertDialog.Builder(activity).setMessage(str).create();
        ad.setOnShowListener(dialogInterface -> {
            Window w = ((AlertDialog) dialogInterface).getWindow();
            if (w != null) {
                w.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
            }
        });
//        LayoutInflater inflater = activity.getLayoutInflater();
//        View dialogView = inflater.inflate(R.layout.crash_layout, null);
//        TextView info = dialogView.findViewById(R.id.info);
//        TextView ex = dialogView.findViewById(R.id.ex);
//        if (info != null) {
//            if (ss.length >= 2) {
//                info.setText(ss[1]);
//            }
//        }
//        if (ex != null) {
//            if (ss.length >= 1) {
//                ex.setText(ss[0]);
//            }
//        }
//        ad.setView(dialogView);
        ad.show();
    }

    public static File getLastModified(String directoryFilePath) {

        File directory = new File(directoryFilePath);

        if (!directory.exists()) {
            return null;
        }

        File[] files = directory.listFiles(File::isFile);

        long lastModifiedTime = Long.MIN_VALUE;

        File chosenFile = null;
        if (files != null) {

            for (File file : files) {

                if (file.lastModified() > lastModifiedTime) {

                    chosenFile = file;
                    lastModifiedTime = file.lastModified();

                }

            }

        }

        return chosenFile;
    }


}